Fig. 2
From: Fine tuning enzyme activity assays for monitoring the enzymatic hydrolysis of PET
Calibration curves for the different concentration domains of the PET-hydrolysis products, obtained by representing the ratios of peak areas specific to each product and caffeine as a function of the molar concentration of the products: (a) calibration curve for the high, mM-concentration range (0.176–1.690 mM) of the products; (b) calibration curve for the low, µM-concentration range (21–211 µM) of the products.
